Store clerks working in Riverhead and Wading River were arrested Wednesday after New York State Police Barracks in Riverside conducted an “underage drinker enforcement operation,” according to a press release.

Riverhead Supermarket & Deli employee Breny Castillo, 21, of Freeport sold alcohol to a minor, and was charged with unlawful dealing with a child, a misdemeanor, and one count of prohibited sale of an alcoholic beverage, a violation, state police said.

The underage agent also bought alcohol from the Time To Eat Café on West Main Street, police said. The clerk, Felix Jerez-Estevez, 46, of the Bronx, was arrested on the same charges as Mr. Castillo.

Both Mr. Jerez-Estevez and Mr. Castillo were given tickets with a future date in Riverhead Town court, police said.

The underage alcohol sting was the second conducted by state police in about a week. On Nov. 20, a Mount Sinai teen working at a Route 58 gas station sold alcohol to an undercover agent and was arrested, state police said at the time.

None of the businesses targeted in the sting on Friday were tested during the previous operation.

A Mount Sinai teen working at a Route 58 gas station was the only clerk to sell alcohol to an undercover agent during an underage drinking sting conducted in Riverhead last Wednesday, state police said.

The following businesses were found to be in compliance: Gulf gas on Main Street, Gulf Gas on Route 58, Winemart, Roanoke Liquors, Wine Depot, Hess Express, Mobil Gas Bolla Market, both Route 58 7-Eleven locations, Sunoco in Calverton, as well as The Thirsty Cellar, Alpine Liquors, Hess Mart Express, Empire Gas, and Valero Gas in Wading River, according to a report.

Route 58 Mobil employee Hamza Khan, 18, was charged with one count of unlawful dealing with a child and one count of prohibited sale of an alcoholic beverage after selling a 6-pack of Budweiser to an undercover officer, according to a report.

New York State Police arrested a Jamesport pizza parlor employee, as well as a Mattituck shop clerk, in an underage alcohol sting on Tuesday after authorities said they both sold beer illegally to undercover cops.

According to police, one employee at Lenny’s Pizza and Pasta in Jamesport, as well as another at Mattituck’s La Tienda, were both charged with unlawfully dealing with a child, as well as prohibited sale of an alcoholic beverage, both misdemeanors.

Six other locations in the Mattituck-Laurel area were involved in the sting did not sell alcohol to a minor, police said: 7-Eleven, Murphy’s Spirit Shoppe, J. Shields Fine Wines, Handy Pantry, and BP Gas/Okan Grocery – all in Mattituck – as well as Empire Gas in Laurel.

Police issued appearance tickets to La Tienda employee Liliana Gomez Orellana, 34 of Jamesport, as well as Christine M. Miller, 40, of Jamesport, who was working at Lenny’s.